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Finding the Fourth Proportional to 71,196.66, 98,248.25 and 39,364.87

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Solution

The fourth proportional to 71,196.66, 98,248.25 and 39,364.87 is: 54,321.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,196.66 : 98,248.25 = 39,364.87 : x
  2. Step 2: Convert to fraction form
    71,196.66/98,248.25 = 39,364.87/x
  3. Step 3: Cross multiply
    71,196.66x = 98,248.25 × 39,364.87
  4. Step 4: Simplify right side
    71,196.66x = 3,867,529,588.98
  5. Step 5: Solve for x
    x = 3,867,529,588.98/71,196.66
  6. Step 6: Final answer
    x = 54,321.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.